Bug 497684

Summary: Opening folder Properties from file dialogs makes apps crash in SambaUserSharePlugin::SambaUserSharePlugin()
Product: [Frameworks and Libraries] kdenetwork-filesharing Reporter: Grósz Dániel <groszdanielpub>
Component: generalAssignee: Unassigned bugs mailing-list <unassigned-bugs>
Status: RESOLVED FIXED    
Severity: crash CC: kdelibs-bugs, nate, sitter
Priority: NOR Keywords: drkonqi, regression
Version: unspecified   
Target Milestone: ---   
Platform: openSUSE   
OS: Linux   
See Also: https://bugs.kde.org/show_bug.cgi?id=494627
Latest Commit: https://invent.kde.org/network/kdenetwork-filesharing/-/commit/f459aac65faf469c9ac7171193785014141e0f4c Version Fixed In: 24.12.2
Sentry Crash Report: https://crash-reports.kde.org/organizations/kde/issues/109166/events/de8e8ae97e22496ebaa7a54fe8241128/

Description Grósz Dániel 2024-12-19 14:54:21 UTC 
Application: kwrite (24.12.0)

ApplicationNotResponding [ANR]: false
Qt Version: 6.8.1
Frameworks Version: 6.9.0
Operating System: Linux 6.11.8-1-default x86_64
Windowing System: X11
Distribution: "openSUSE Tumbleweed"
DrKonqi: 6.2.4 [CoredumpBackend]

-- Information about the crash:
If I open an Open, Save or Folder selection dialog in any KDE application, and in the main area of the dialog right-click a folder and click Properties, the application crashes. The file dialog disappears first, then a moment later the whole application segfaults.

It only happens with folders (including links to folders), but not regular files.

I first noticed it when trying to use the Properties dialog to rename a folder before selecting it in a folder selection dialog (which doesn't have a separate Rename context menu item, unlike regular file dialogs). This backtrace is from the regular Open dialog of KWrite.

There is a similar bug with opening the Properties of a folder in the Places sidebar of a file or folder dialog. In that case, the app doesn't crash, and the Properties dialog opens, but the file dialog itself disappears and then reappears at a different place on the screen, and the it disappears when the Properties dialog is closed.

The crash can be reproduced every time.

-- Backtrace:
Application: KWrite (kwrite), signal: Segmentation fault


warning: Can't open file anon_inode:i915.gem which was expanded to anon_inode:i915.gem during file-backed mapping note processing

warning: Can't open file /var/lib/nscd/group during file-backed mapping note processing

warning: Can't open file /memfd:xorg (deleted) during file-backed mapping note processing

warning: Can't open file /var/lib/nscd/passwd during file-backed mapping note processing
[New LWP 1240703]
[New LWP 1240710]
[New LWP 1240732]
[New LWP 1240729]
[New LWP 1240709]
[New LWP 1240712]
[New LWP 1240730]
[New LWP 1240731]
[New LWP 1240783]
[New LWP 1240784]
[New LWP 1240794]
[New LWP 1240713]

This GDB supports auto-downloading debuginfo from the following URLs:
  <https://debuginfod.opensuse.org/>
Enable debuginfod for this session? (y or [n]) [answered N; input not from terminal]
Debuginfod has been disabled.
To make this setting permanent, add 'set debuginfod enabled off' to .gdbinit.
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib64/libthread_db.so.1".
Core was generated by `kwrite'.
Program terminated with signal SIGSEGV, Segmentation fault.
#0  0x00007f8b4449a25c in __pthread_kill_implementation () from /lib64/libc.so.6
[Current thread is 1 (Thread 0x7f8b3f047b00 (LWP 1240703))]
Cannot QML trace cores :(
[Current thread is 1 (Thread 0x7f8b3f047b00 (LWP 1240703))]

Thread 12 (Thread 0x7f8b34dfe6c0 (LWP 1240713)):
#0  0x00007f8b444946be in __futex_abstimed_wait_common () at /lib64/libc.so.6
#1  0x00007f8b44497520 in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libc.so.6
#2  0x00007f8b35b854b9 in ??? () at /lib64/libgallium-24.3.1.so
#3  0x00007f8b35b5159b in ??? () at /lib64/libgallium-24.3.1.so
#4  0x00007f8b35b853f7 in ??? () at /lib64/libgallium-24.3.1.so
#5  0x00007f8b444983b2 in start_thread () at /lib64/libc.so.6
#6  0x00007f8b4451d5fc in __clone3 () at /lib64/libc.so.6

Thread 11 (Thread 0x7f8b165bb6c0 (LWP 1240794)):
#0  0x00007f8b4450f186 in ppoll () at /lib64/libc.so.6
#1  0x00007f8b44b18b59 in ppoll (__fds=<optimized out>, __nfds=<optimized out>, __timeout=<optimized out>, __ss=<optimized out>) at /usr/src/debug/qtbase-everywhere-src-6.8.1/src/corelib/kernel/qcore_unix.cpp:100
#2  qt_ppoll (fds=0x7f8b165ba7b0, nfds=1, timeout_ts=0x0) at /usr/src/debug/qtbase-everywhere-src-6.8.1/src/corelib/kernel/qcore_unix.cpp:103
#3  qt_ppoll (fds=0x7f8b165ba7b0, nfds=1, timeout_ts=0x0) at /usr/src/debug/qtbase-everywhere-src-6.8.1/src/corelib/kernel/qcore_unix.cpp:100
#4  qt_safe_poll (deadline=..., fds=<optimized out>, nfds=<optimized out>) at /usr/src/debug/qtbase-everywhere-src-6.8.1/src/corelib/kernel/qcore_unix.cpp:126
#5  qt_safe_poll (fds=fds@entry=0x7f8b165ba7b0, nfds=nfds@entry=1, deadline=...) at /usr/src/debug/qtbase-everywhere-src-6.8.1/src/corelib/kernel/qcore_unix.cpp:121
#6  0x00007f8b41e6c381 in QNativeSocketEnginePrivate::nativeSelect (this=<optimized out>, deadline=..., checkRead=<optimized out>, checkWrite=<optimized out>, selectForRead=0x7f8b165ba89f, selectForWrite=0x7f8b165ba89e) at /usr/src/debug/qtbase-everywhere-src-6.8.1/src/network/socket/qnativesocketengine_unix.cpp:1371
#7  0x00007f8b41dfa1f1 in QNativeSocketEngine::waitForReadOrWrite (this=0x7f8af4002840, readyToRead=0x7f8b165ba89f, readyToWrite=<optimized out>, checkRead=true, checkWrite=false, deadline=..., timedOut=0x0) at /usr/src/debug/qtbase-everywhere-src-6.8.1/src/network/socket/qnativesocketengine.cpp:1084
#8  0x00007f8b41df0a2c in QAbstractSocket::waitForReadyRead (this=0x7f8af4002448, msecs=-1) at /usr/src/debug/qtbase-everywhere-src-6.8.1/src/network/socket/qabstractsocket.cpp:2168
#9  0x00007f8b446c850a in KIO::ConnectionBackend::waitForIncomingTask (this=0x7f8af4001e30, ms=-1) at /usr/src/debug/kio-6.9.0/src/core/connectionbackend.cpp:153
#10 0x00007f8b447a407d in KIO::Connection::waitForIncomingTask (this=<optimized out>, ms=-1) at /usr/src/debug/kio-6.9.0/src/core/connection.cpp:214
#11 KIO::SlaveBase::dispatchLoop() [clone .constprop.0] (this=<optimized out>) at /usr/src/debug/kio-6.9.0/src/core/slavebase.cpp:353
#12 0x00007f8b4477ef0b in KIO::WorkerThread::run (this=0x55a8915700f0) at /usr/src/debug/kio-6.9.0/src/core/workerthread.cpp:47
#13 0x00007f8b44b1d79d in operator() (__closure=<optimized out>) at /usr/src/debug/qtbase-everywhere-src-6.8.1/src/corelib/thread/qthread_unix.cpp:354
#14 (anonymous namespace)::terminate_on_exception<QThreadPrivate::start(void*)::<lambda()> > (t=<optimized out>) at /usr/src/debug/qtbase-everywhere-src-6.8.1/src/corelib/thread/qthread_unix.cpp:290
#15 QThreadPrivate::start (arg=0x55a8915700f0) at /usr/src/debug/qtbase-everywhere-src-6.8.1/src/corelib/thread/qthread_unix.cpp:318
#16 0x00007f8b444983b2 in start_thread () at /lib64/libc.so.6
#17 0x00007f8b4451d5fc in __clone3 () at /lib64/libc.so.6

Thread 10 (Thread 0x7f8b177fe6c0 (LWP 1240784)):
#0  0x00007f8b4450f186 in ppoll () at /lib64/libc.so.6
#1  0x00007f8b44b18b59 in ppoll (__fds=<optimized out>, __nfds=<optimized out>, __timeout=<optimized out>, __ss=<optimized out>) at /usr/src/debug/qtbase-everywhere-src-6.8.1/src/corelib/kernel/qcore_unix.cpp:100
#2  qt_ppoll (fds=0x7f8b177fd7b0, nfds=1, timeout_ts=0x0) at /usr/src/debug/qtbase-everywhere-src-6.8.1/src/corelib/kernel/qcore_unix.cpp:103
#3  qt_ppoll (fds=0x7f8b177fd7b0, nfds=1, timeout_ts=0x0) at /usr/src/debug/qtbase-everywhere-src-6.8.1/src/corelib/kernel/qcore_unix.cpp:100
#4  qt_safe_poll (deadline=..., fds=<optimized out>, nfds=<optimized out>) at /usr/src/debug/qtbase-everywhere-src-6.8.1/src/corelib/kernel/qcore_unix.cpp:126
#5  qt_safe_poll (fds=fds@entry=0x7f8b177fd7b0, nfds=nfds@entry=1, deadline=...) at /usr/src/debug/qtbase-everywhere-src-6.8.1/src/corelib/kernel/qcore_unix.cpp:121
#6  0x00007f8b41e6c381 in QNativeSocketEnginePrivate::nativeSelect (this=<optimized out>, deadline=..., checkRead=<optimized out>, checkWrite=<optimized out>, selectForRead=0x7f8b177fd89f, selectForWrite=0x7f8b177fd89e) at /usr/src/debug/qtbase-everywhere-src-6.8.1/src/network/socket/qnativesocketengine_unix.cpp:1371
#7  0x00007f8b41dfa1f1 in QNativeSocketEngine::waitForReadOrWrite (this=0x7f8b00000eb0, readyToRead=0x7f8b177fd89f, readyToWrite=<optimized out>, checkRead=true, checkWrite=false, deadline=..., timedOut=0x0) at /usr/src/debug/qtbase-everywhere-src-6.8.1/src/network/socket/qnativesocketengine.cpp:1084
#8  0x00007f8b41df0a2c in QAbstractSocket::waitForReadyRead (this=0x7f8b000207c8, msecs=-1) at /usr/src/debug/qtbase-everywhere-src-6.8.1/src/network/socket/qabstractsocket.cpp:2168
#9  0x00007f8b446c850a in KIO::ConnectionBackend::waitForIncomingTask (this=0x7f8b00030d90, ms=-1) at /usr/src/debug/kio-6.9.0/src/core/connectionbackend.cpp:153
#10 0x00007f8b447a407d in KIO::Connection::waitForIncomingTask (this=<optimized out>, ms=-1) at /usr/src/debug/kio-6.9.0/src/core/connection.cpp:214
#11 KIO::SlaveBase::dispatchLoop() [clone .constprop.0] (this=<optimized out>) at /usr/src/debug/kio-6.9.0/src/core/slavebase.cpp:353
#12 0x00007f8b4477ef0b in KIO::WorkerThread::run (this=0x55a8911fb3b0) at /usr/src/debug/kio-6.9.0/src/core/workerthread.cpp:47
#13 0x00007f8b44b1d79d in operator() (__closure=<optimized out>) at /usr/src/debug/qtbase-everywhere-src-6.8.1/src/corelib/thread/qthread_unix.cpp:354
#14 (anonymous namespace)::terminate_on_exception<QThreadPrivate::start(void*)::<lambda()> > (t=<optimized out>) at /usr/src/debug/qtbase-everywhere-src-6.8.1/src/corelib/thread/qthread_unix.cpp:290
#15 QThreadPrivate::start (arg=0x55a8911fb3b0) at /usr/src/debug/qtbase-everywhere-src-6.8.1/src/corelib/thread/qthread_unix.cpp:318
#16 0x00007f8b444983b2 in start_thread () at /lib64/libc.so.6
#17 0x00007f8b4451d5fc in __clone3 () at /lib64/libc.so.6

Thread 9 (Thread 0x7f8b16ffd6c0 (LWP 1240783)):
#0  0x00007f8b4450f186 in ppoll () at /lib64/libc.so.6
#1  0x00007f8b44b18b59 in ppoll (__fds=<optimized out>, __nfds=<optimized out>, __timeout=<optimized out>, __ss=<optimized out>) at /usr/src/debug/qtbase-everywhere-src-6.8.1/src/corelib/kernel/qcore_unix.cpp:100
#2  qt_ppoll (fds=0x7f8b16ffc7b0, nfds=1, timeout_ts=0x0) at /usr/src/debug/qtbase-everywhere-src-6.8.1/src/corelib/kernel/qcore_unix.cpp:103
#3  qt_ppoll (fds=0x7f8b16ffc7b0, nfds=1, timeout_ts=0x0) at /usr/src/debug/qtbase-everywhere-src-6.8.1/src/corelib/kernel/qcore_unix.cpp:100
#4  qt_safe_poll (deadline=..., fds=<optimized out>, nfds=<optimized out>) at /usr/src/debug/qtbase-everywhere-src-6.8.1/src/corelib/kernel/qcore_unix.cpp:126
#5  qt_safe_poll (fds=fds@entry=0x7f8b16ffc7b0, nfds=nfds@entry=1, deadline=...) at /usr/src/debug/qtbase-everywhere-src-6.8.1/src/corelib/kernel/qcore_unix.cpp:121
#6  0x00007f8b41e6c381 in QNativeSocketEnginePrivate::nativeSelect (this=<optimized out>, deadline=..., checkRead=<optimized out>, checkWrite=<optimized out>, selectForRead=0x7f8b16ffc89f, selectForWrite=0x7f8b16ffc89e) at /usr/src/debug/qtbase-everywhere-src-6.8.1/src/network/socket/qnativesocketengine_unix.cpp:1371
#7  0x00007f8b41dfa1f1 in QNativeSocketEngine::waitForReadOrWrite (this=0x7f8af8002840, readyToRead=0x7f8b16ffc89f, readyToWrite=<optimized out>, checkRead=true, checkWrite=false, deadline=..., timedOut=0x0) at /usr/src/debug/qtbase-everywhere-src-6.8.1/src/network/socket/qnativesocketengine.cpp:1084
#8  0x00007f8b41df0a2c in QAbstractSocket::waitForReadyRead (this=0x7f8af8002448, msecs=-1) at /usr/src/debug/qtbase-everywhere-src-6.8.1/src/network/socket/qabstractsocket.cpp:2168
#9  0x00007f8b446c850a in KIO::ConnectionBackend::waitForIncomingTask (this=0x7f8af8001e30, ms=-1) at /usr/src/debug/kio-6.9.0/src/core/connectionbackend.cpp:153
#10 0x00007f8b447a407d in KIO::Connection::waitForIncomingTask (this=<optimized out>, ms=-1) at /usr/src/debug/kio-6.9.0/src/core/connection.cpp:214
#11 KIO::SlaveBase::dispatchLoop() [clone .constprop.0] (this=<optimized out>) at /usr/src/debug/kio-6.9.0/src/core/slavebase.cpp:353
#12 0x00007f8b4477ef0b in KIO::WorkerThread::run (this=0x55a8913705d0) at /usr/src/debug/kio-6.9.0/src/core/workerthread.cpp:47
#13 0x00007f8b44b1d79d in operator() (__closure=<optimized out>) at /usr/src/debug/qtbase-everywhere-src-6.8.1/src/corelib/thread/qthread_unix.cpp:354
#14 (anonymous namespace)::terminate_on_exception<QThreadPrivate::start(void*)::<lambda()> > (t=<optimized out>) at /usr/src/debug/qtbase-everywhere-src-6.8.1/src/corelib/thread/qthread_unix.cpp:290
#15 QThreadPrivate::start (arg=0x55a8913705d0) at /usr/src/debug/qtbase-everywhere-src-6.8.1/src/corelib/thread/qthread_unix.cpp:318
#16 0x00007f8b444983b2 in start_thread () at /lib64/libc.so.6
#17 0x00007f8b4451d5fc in __clone3 () at /lib64/libc.so.6

Thread 8 (Thread 0x7f8b209ff6c0 (LWP 1240731)):
#0  0x00007f8b444946be in __futex_abstimed_wait_common () at /lib64/libc.so.6
#1  0x00007f8b44497845 in pthread_cond_timedwait@@GLIBC_2.3.2 () at /lib64/libc.so.6
#2  0x00007f8b44b221a8 in QWaitConditionPrivate::wait_relative (this=<optimized out>, deadline=...) at /usr/src/debug/qtbase-everywhere-src-6.8.1/src/corelib/thread/qwaitcondition_unix.cpp:95
#3  QWaitConditionPrivate::wait (this=0x55a8907cb300, deadline=...) at /usr/src/debug/qtbase-everywhere-src-6.8.1/src/corelib/thread/qwaitcondition_unix.cpp:103
#4  QWaitCondition::wait (this=this@entry=0x55a8908152b0, mutex=mutex@entry=0x55a8901c40e8, deadline=...) at /usr/src/debug/qtbase-everywhere-src-6.8.1/src/corelib/thread/qwaitcondition_unix.cpp:183
#5  0x00007f8b44b23c8c in QThreadPoolThread::run (this=0x55a8908152a0) at /usr/src/debug/qtbase-everywhere-src-6.8.1/src/corelib/thread/qthreadpool.cpp:118
#6  0x00007f8b44b1d79d in operator() (__closure=<optimized out>) at /usr/src/debug/qtbase-everywhere-src-6.8.1/src/corelib/thread/qthread_unix.cpp:354
#7  (anonymous namespace)::terminate_on_exception<QThreadPrivate::start(void*)::<lambda()> > (t=<optimized out>) at /usr/src/debug/qtbase-everywhere-src-6.8.1/src/corelib/thread/qthread_unix.cpp:290
#8  QThreadPrivate::start (arg=0x55a8908152a0) at /usr/src/debug/qtbase-everywhere-src-6.8.1/src/corelib/thread/qthread_unix.cpp:318
#9  0x00007f8b444983b2 in start_thread () at /lib64/libc.so.6
#10 0x00007f8b4451d5fc in __clone3 () at /lib64/libc.so.6

Thread 7 (Thread 0x7f8b237fe6c0 (LWP 1240730)):
#0  0x00007f8b444946be in __futex_abstimed_wait_common () at /lib64/libc.so.6
#1  0x00007f8b44497845 in pthread_cond_timedwait@@GLIBC_2.3.2 () at /lib64/libc.so.6
#2  0x00007f8b44b221a8 in QWaitConditionPrivate::wait_relative (this=<optimized out>, deadline=...) at /usr/src/debug/qtbase-everywhere-src-6.8.1/src/corelib/thread/qwaitcondition_unix.cpp:95
#3  QWaitConditionPrivate::wait (this=0x55a890f1a620, deadline=...) at /usr/src/debug/qtbase-everywhere-src-6.8.1/src/corelib/thread/qwaitcondition_unix.cpp:103
#4  QWaitCondition::wait (this=this@entry=0x55a89081e4e0, mutex=mutex@entry=0x55a8901c40e8, deadline=...) at /usr/src/debug/qtbase-everywhere-src-6.8.1/src/corelib/thread/qwaitcondition_unix.cpp:183
#5  0x00007f8b44b23c8c in QThreadPoolThread::run (this=0x55a89081e4d0) at /usr/src/debug/qtbase-everywhere-src-6.8.1/src/corelib/thread/qthreadpool.cpp:118
#6  0x00007f8b44b1d79d in operator() (__closure=<optimized out>) at /usr/src/debug/qtbase-everywhere-src-6.8.1/src/corelib/thread/qthread_unix.cpp:354
#7  (anonymous namespace)::terminate_on_exception<QThreadPrivate::start(void*)::<lambda()> > (t=<optimized out>) at /usr/src/debug/qtbase-everywhere-src-6.8.1/src/corelib/thread/qthread_unix.cpp:290
#8  QThreadPrivate::start (arg=0x55a89081e4d0) at /usr/src/debug/qtbase-everywhere-src-6.8.1/src/corelib/thread/qthread_unix.cpp:318
#9  0x00007f8b444983b2 in start_thread () at /lib64/libc.so.6
#10 0x00007f8b4451d5fc in __clone3 () at /lib64/libc.so.6

Thread 6 (Thread 0x7f8b355ff6c0 (LWP 1240712)):
#0  0x00007f8b444946be in __futex_abstimed_wait_common () at /lib64/libc.so.6
#1  0x00007f8b44497520 in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libc.so.6
#2  0x00007f8b35b854b9 in ??? () at /lib64/libgallium-24.3.1.so
#3  0x00007f8b35b5159b in ??? () at /lib64/libgallium-24.3.1.so
#4  0x00007f8b35b853f7 in ??? () at /lib64/libgallium-24.3.1.so
#5  0x00007f8b444983b2 in start_thread () at /lib64/libc.so.6
#6  0x00007f8b4451d5fc in __clone3 () at /lib64/libc.so.6

Thread 5 (Thread 0x7f8b3eb896c0 (LWP 1240709)):
#0  0x00007f8b4450f186 in ppoll () at /lib64/libc.so.6
#1  0x00007f8b4334ed9f in ppoll (__fds=0x55a89050e530, __nfds=5, __timeout=0x0, __ss=0x0) at /usr/include/bits/poll2.h:101
#2  g_main_context_poll_unlocked (priority=<optimized out>, context=0x7f8b38000cb0, timeout_usec=<optimized out>, fds=0x55a89050e530, n_fds=5) at ../glib/gmain.c:4591
#3  g_main_context_iterate_unlocked (context=context@entry=0x7f8b38000cb0, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at ../glib/gmain.c:4268
#4  0x00007f8b4334f4bc in g_main_context_iteration (context=0x7f8b38000cb0, may_block=1) at ../glib/gmain.c:4338
#5  0x00007f8b44c00723 in QEventDispatcherGlib::processEvents (this=0x7f8b38000ba0, flags=...) at /usr/src/debug/qtbase-everywhere-src-6.8.1/src/corelib/kernel/qeventdispatcher_glib.cpp:399
#6  0x00007f8b449b5aa2 in QEventLoop::exec (this=0x7f8b3eb88a10, flags=...) at /usr/src/debug/qtbase-everywhere-src-6.8.1/src/corelib/global/qflags.h:34
#7  0x00007f8b44aa44cc in QThread::exec (this=this@entry=0x7f8b43a15b20 <QGlobalStatic<QtGlobalStatic::Holder<(anonymous namespace)::Q_QGS__q_manager> >::instance()::holder>) at /usr/src/debug/qtbase-everywhere-src-6.8.1/src/corelib/global/qflags.h:74
#8  0x00007f8b4398e14e in QDBusConnectionManager::run (this=0x7f8b43a15b20 <QGlobalStatic<QtGlobalStatic::Holder<(anonymous namespace)::Q_QGS__q_manager> >::instance()::holder>) at /usr/src/debug/qtbase-everywhere-src-6.8.1/src/dbus/qdbusconnectionmanager.cpp:144
#9  0x00007f8b44b1d79d in operator() (__closure=<optimized out>) at /usr/src/debug/qtbase-everywhere-src-6.8.1/src/corelib/thread/qthread_unix.cpp:354
#10 (anonymous namespace)::terminate_on_exception<QThreadPrivate::start(void*)::<lambda()> > (t=<optimized out>) at /usr/src/debug/qtbase-everywhere-src-6.8.1/src/corelib/thread/qthread_unix.cpp:290
#11 QThreadPrivate::start (arg=0x7f8b43a15b20 <QGlobalStatic<QtGlobalStatic::Holder<(anonymous namespace)::Q_QGS__q_manager> >::instance()::holder>) at /usr/src/debug/qtbase-everywhere-src-6.8.1/src/corelib/thread/qthread_unix.cpp:318
#12 0x00007f8b444983b2 in start_thread () at /lib64/libc.so.6
#13 0x00007f8b4451d5fc in __clone3 () at /lib64/libc.so.6

Thread 4 (Thread 0x7f8b23fff6c0 (LWP 1240729)):
#0  0x00007f8b444946be in __futex_abstimed_wait_common () at /lib64/libc.so.6
#1  0x00007f8b44497845 in pthread_cond_timedwait@@GLIBC_2.3.2 () at /lib64/libc.so.6
#2  0x00007f8b44b221a8 in QWaitConditionPrivate::wait_relative (this=<optimized out>, deadline=...) at /usr/src/debug/qtbase-everywhere-src-6.8.1/src/corelib/thread/qwaitcondition_unix.cpp:95
#3  QWaitConditionPrivate::wait (this=0x55a890611d70, deadline=...) at /usr/src/debug/qtbase-everywhere-src-6.8.1/src/corelib/thread/qwaitcondition_unix.cpp:103
#4  QWaitCondition::wait (this=this@entry=0x55a89081e580, mutex=mutex@entry=0x55a8901c40e8, deadline=...) at /usr/src/debug/qtbase-everywhere-src-6.8.1/src/corelib/thread/qwaitcondition_unix.cpp:183
#5  0x00007f8b44b23c8c in QThreadPoolThread::run (this=0x55a89081e570) at /usr/src/debug/qtbase-everywhere-src-6.8.1/src/corelib/thread/qthreadpool.cpp:118
#6  0x00007f8b44b1d79d in operator() (__closure=<optimized out>) at /usr/src/debug/qtbase-everywhere-src-6.8.1/src/corelib/thread/qthread_unix.cpp:354
#7  (anonymous namespace)::terminate_on_exception<QThreadPrivate::start(void*)::<lambda()> > (t=<optimized out>) at /usr/src/debug/qtbase-everywhere-src-6.8.1/src/corelib/thread/qthread_unix.cpp:290
#8  QThreadPrivate::start (arg=0x55a89081e570) at /usr/src/debug/qtbase-everywhere-src-6.8.1/src/corelib/thread/qthread_unix.cpp:318
#9  0x00007f8b444983b2 in start_thread () at /lib64/libc.so.6
#10 0x00007f8b4451d5fc in __clone3 () at /lib64/libc.so.6

Thread 3 (Thread 0x7f8b17fff6c0 (LWP 1240732)):
#0  0x00007f8b444946be in __futex_abstimed_wait_common () at /lib64/libc.so.6
#1  0x00007f8b44497845 in pthread_cond_timedwait@@GLIBC_2.3.2 () at /lib64/libc.so.6
#2  0x00007f8b44b221a8 in QWaitConditionPrivate::wait_relative (this=<optimized out>, deadline=...) at /usr/src/debug/qtbase-everywhere-src-6.8.1/src/corelib/thread/qwaitcondition_unix.cpp:95
#3  QWaitConditionPrivate::wait (this=0x55a89077de30, deadline=...) at /usr/src/debug/qtbase-everywhere-src-6.8.1/src/corelib/thread/qwaitcondition_unix.cpp:103
#4  QWaitCondition::wait (this=this@entry=0x55a890f0e0b0, mutex=mutex@entry=0x55a8901c40e8, deadline=...) at /usr/src/debug/qtbase-everywhere-src-6.8.1/src/corelib/thread/qwaitcondition_unix.cpp:183
#5  0x00007f8b44b23c8c in QThreadPoolThread::run (this=0x55a890f0e0a0) at /usr/src/debug/qtbase-everywhere-src-6.8.1/src/corelib/thread/qthreadpool.cpp:118
#6  0x00007f8b44b1d79d in operator() (__closure=<optimized out>) at /usr/src/debug/qtbase-everywhere-src-6.8.1/src/corelib/thread/qthread_unix.cpp:354
#7  (anonymous namespace)::terminate_on_exception<QThreadPrivate::start(void*)::<lambda()> > (t=<optimized out>) at /usr/src/debug/qtbase-everywhere-src-6.8.1/src/corelib/thread/qthread_unix.cpp:290
#8  QThreadPrivate::start (arg=0x55a890f0e0a0) at /usr/src/debug/qtbase-everywhere-src-6.8.1/src/corelib/thread/qthread_unix.cpp:318
#9  0x00007f8b444983b2 in start_thread () at /lib64/libc.so.6
#10 0x00007f8b4451d5fc in __clone3 () at /lib64/libc.so.6

Thread 2 (Thread 0x7f8b3e3886c0 (LWP 1240710)):
#0  0x00007f8b4450ebcf in poll () at /lib64/libc.so.6
#1  0x00007f8b425fd8aa in ??? () at /lib64/libxcb.so.1
#2  0x00007f8b425ff41c in xcb_wait_for_event () at /lib64/libxcb.so.1
#3  0x00007f8b3ef73d58 in QXcbEventQueue::run (this=0x55a89017ad80) at /usr/src/debug/qtbase-everywhere-src-6.8.1/src/plugins/platforms/xcb/qxcbeventqueue.cpp:192
#4  0x00007f8b44b1d79d in operator() (__closure=<optimized out>) at /usr/src/debug/qtbase-everywhere-src-6.8.1/src/corelib/thread/qthread_unix.cpp:354
#5  (anonymous namespace)::terminate_on_exception<QThreadPrivate::start(void*)::<lambda()> > (t=<optimized out>) at /usr/src/debug/qtbase-everywhere-src-6.8.1/src/corelib/thread/qthread_unix.cpp:290
#6  QThreadPrivate::start (arg=0x55a89017ad80) at /usr/src/debug/qtbase-everywhere-src-6.8.1/src/corelib/thread/qthread_unix.cpp:318
#7  0x00007f8b444983b2 in start_thread () at /lib64/libc.so.6
#8  0x00007f8b4451d5fc in __clone3 () at /lib64/libc.so.6

Thread 1 (Thread 0x7f8b3f047b00 (LWP 1240703)):
[KCrash Handler]
#4  std::__atomic_base<QObjectPrivate::SignalVector*>::load (this=0x645f4252415f4c4f, __m=std::memory_order_relaxed) at /usr/include/c++/14/bits/atomic_base.h:831
#5  std::atomic<QObjectPrivate::SignalVector*>::load (this=0x645f4252415f4c4f, __m=std::memory_order_relaxed) at /usr/include/c++/14/atomic:582
#6  QAtomicOps<QObjectPrivate::SignalVector*>::loadRelaxed<QObjectPrivate::SignalVector*> (_q_value=...) at /usr/src/debug/qtbase-everywhere-src-6.8.1/src/corelib/thread/qatomic_cxx11.h:202
#7  QBasicAtomicPointer<QObjectPrivate::SignalVector>::loadRelaxed (this=0x645f4252415f4c4f) at /usr/src/debug/qtbase-everywhere-src-6.8.1/src/corelib/thread/qbasicatomic.h:170
#8  QObjectPrivate::ConnectionData::resizeSignalVector (this=0x645f4252415f4c47, size=4) at /usr/src/debug/qtbase-everywhere-src-6.8.1/src/corelib/kernel/qobject_p_p.h:184
#9  QObjectPrivate::addConnection (this=<optimized out>, signal=3, c=0x55a89136eb50) at /usr/src/debug/qtbase-everywhere-src-6.8.1/src/corelib/kernel/qobject.cpp:278
#10 QObjectPrivate::connectImpl (sender=0x55a8918a0b60, signal_index=3, receiver=<optimized out>, slot=<optimized out>, slotObjRaw=<optimized out>, type=<optimized out>, types=<optimized out>, senderMetaObject=<optimized out>) at /usr/src/debug/qtbase-everywhere-src-6.8.1/src/corelib/kernel/qobject.cpp:5312
#11 0x00007f8b44a02f40 in QObject::connectImpl (sender=sender@entry=0x55a8918a0b60, signal=signal@entry=0x7ffebf51c320, receiver=receiver@entry=0x55a89182b580, slot=slot@entry=0x0, slotObjRaw=0x55a8917e9c10, type=Qt::AutoConnection, types=0x0, senderMetaObject=<optimized out>) at /usr/src/debug/qtbase-everywhere-src-6.8.1/src/corelib/kernel/qobject.cpp:5230
#12 0x00007f8b2871affa in QObject::connect<void (UserManager::*)(), SambaUserSharePlugin::SambaUserSharePlugin(QObject*)::<lambda()>::<lambda()> > (type=Qt::AutoConnection, sender=0x55a8918a0b60, signal=(void (UserManager::*)(UserManager * const)) 0x7f8b287182e0 <UserManager::loaded()>, context=0x55a89182b580, slot=<optimized out>) at /usr/include/qt6/QtCore/qobject.h:270
#13 operator() (__closure=0x55a891c74ea0) at /usr/src/debug/kdenetwork-filesharing-24.12.0/samba/filepropertiesplugin/sambausershareplugin.cpp:104
#14 operator() (__closure=<optimized out>) at /usr/include/qt6/QtCore/qobjectdefs_impl.h:141
#15 QtPrivate::FunctorCallBase::call_internal<void, QtPrivate::FunctorCall<QtPrivate::IndexesList<>, QtPrivate::List<>, void, SambaUserSharePlugin::SambaUserSharePlugin(QObject*)::<lambda()> >::call(SambaUserSharePlugin::SambaUserSharePlugin(QObject*)::<lambda()>&, void**)::<lambda()> > (args=<optimized out>, fn=<optimized out>) at /usr/include/qt6/QtCore/qobjectdefs_impl.h:65
#16 QtPrivate::FunctorCall<QtPrivate::IndexesList<>, QtPrivate::List<>, void, SambaUserSharePlugin::SambaUserSharePlugin(QObject*)::<lambda()> >::call (f=..., arg=<optimized out>) at /usr/include/qt6/QtCore/qobjectdefs_impl.h:140
#17 QtPrivate::FunctorCallable<SambaUserSharePlugin::SambaUserSharePlugin(QObject*)::<lambda()> >::call<QtPrivate::List<>, void> (f=..., arg=<optimized out>) at /usr/include/qt6/QtCore/qobjectdefs_impl.h:362
#18 QtPrivate::QCallableObject<SambaUserSharePlugin::SambaUserSharePlugin(QObject*)::<lambda()>, QtPrivate::List<>, void>::impl(int, QtPrivate::QSlotObjectBase *, QObject *, void **, bool *) (which=<optimized out>, this_=0x55a891c74e90, r=<optimized out>, a=<optimized out>, ret=<optimized out>) at /usr/include/qt6/QtCore/qobjectdefs_impl.h:572
#19 0x00007f8b449f9967 in QObject::event (this=0x55a890163440, e=0x55a891c6fe10) at /usr/src/debug/qtbase-everywhere-src-6.8.1/src/corelib/kernel/qobject.cpp:1419
#20 0x00007f8b45bdec35 in QApplicationPrivate::notify_helper (this=<optimized out>, receiver=0x55a890163440, e=0x55a891c6fe10) at /usr/src/debug/qtbase-everywhere-src-6.8.1/src/widgets/kernel/qapplication.cpp:3296
#21 0x00007f8b449ac948 in QCoreApplication::notifyInternal2 (receiver=0x55a890163440, event=0x55a891c6fe10) at /usr/src/debug/qtbase-everywhere-src-6.8.1/src/corelib/kernel/qcoreapplication.cpp:1168
#22 0x00007f8b449b4c78 in QCoreApplicationPrivate::sendPostedEvents (receiver=0x0, event_type=0, data=0x55a8901633a0) at /usr/src/debug/qtbase-everywhere-src-6.8.1/src/corelib/kernel/qcoreapplication.cpp:1968
#23 0x00007f8b44c03287 in postEventSourceDispatch (s=0x55a8901edd70) at /usr/src/debug/qtbase-everywhere-src-6.8.1/src/corelib/kernel/qeventdispatcher_glib.cpp:246
#24 0x00007f8b4334ceb8 in g_main_dispatch (context=0x7f8b38000f30) at ../glib/gmain.c:3357
#25 g_main_context_dispatch_unlocked (context=context@entry=0x7f8b38000f30) at ../glib/gmain.c:4208
#26 0x00007f8b4334eca8 in g_main_context_iterate_unlocked (context=context@entry=0x7f8b38000f30, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at ../glib/gmain.c:4273
#27 0x00007f8b4334f4bc in g_main_context_iteration (context=0x7f8b38000f30, may_block=1) at ../glib/gmain.c:4338
#28 0x00007f8b44c00723 in QEventDispatcherGlib::processEvents (this=0x55a8901ecd40, flags=...) at /usr/src/debug/qtbase-everywhere-src-6.8.1/src/corelib/kernel/qeventdispatcher_glib.cpp:399
#29 0x00007f8b449b5aa2 in QEventLoop::exec (this=this@entry=0x7ffebf51c7d0, flags=..., flags@entry=...) at /usr/src/debug/qtbase-everywhere-src-6.8.1/src/corelib/global/qflags.h:34
#30 0x00007f8b449b5f8a in QCoreApplication::exec () at /usr/src/debug/qtbase-everywhere-src-6.8.1/src/corelib/global/qflags.h:74
#31 0x00007f8b4520eed0 in QGuiApplication::exec () at /usr/src/debug/qtbase-everywhere-src-6.8.1/src/gui/kernel/qguiapplication.cpp:1975
#32 0x00007f8b45bdbef9 in QApplication::exec () at /usr/src/debug/qtbase-everywhere-src-6.8.1/src/widgets/kernel/qapplication.cpp:2564
#33 0x000055a86f351158 in main (argc=<optimized out>, argv=<optimized out>) at /usr/src/debug/kate-24.12.0/apps/kwrite/main.cpp:162

Reported using DrKonqi
Comment 1 Nate Graham 2024-12-20 19:08:01 UTC 
Can reproduce 100%.

#12 0x00007f8b2871affa in QObject::connect<void (UserManager::*)(), SambaUserSharePlugin::SambaUserSharePlugin(QObject*)::<lambda()>::<lambda()> > (type=Qt::AutoConnection, sender=0x55a8918a0b60, signal=(void (UserManager::*)(UserManager * const)) 0x7f8b287182e0 <UserManager::loaded()>, context=0x55a89182b580, slot=<optimized out>) at /usr/include/qt6/QtCore/qobject.h:270
Comment 2 Bug Janitor Service 2025-01-07 13:05:52 UTC 
A possibly relevant merge request was started @ https://invent.kde.org/network/kdenetwork-filesharing/-/merge_requests/57
Comment 3 Harald Sitter 2025-01-09 13:06:20 UTC 
Git commit e2f94a695312a3dd808245b7887d021d68f92fef by Harald Sitter.
Committed on 09/01/2025 at 12:43.
Pushed by sitter into branch 'master'.

bind queued invocation to `this`

lest `this` gets deleted meanwhile and we access bad memory

M  +1    -1    samba/filepropertiesplugin/sambausershareplugin.cpp

https://invent.kde.org/network/kdenetwork-filesharing/-/commit/e2f94a695312a3dd808245b7887d021d68f92fef
Comment 4 Harald Sitter 2025-01-09 13:15:33 UTC 
Git commit f459aac65faf469c9ac7171193785014141e0f4c by Harald Sitter.
Committed on 09/01/2025 at 13:06.
Pushed by sitter into branch 'release/24.12'.

bind queued invocation to `this`

lest `this` gets deleted meanwhile and we access bad memory


(cherry picked from commit e2f94a695312a3dd808245b7887d021d68f92fef)

Co-authored-by: Harald Sitter <sitter@kde.org>

M  +1    -1    samba/filepropertiesplugin/sambausershareplugin.cpp

https://invent.kde.org/network/kdenetwork-filesharing/-/commit/f459aac65faf469c9ac7171193785014141e0f4c